/**
* {@inheritdoc}
*/
public function createVariation(ImageFormat $output_format, $quality, ImageDimensions $dimensions = null, ImageCropDimensions $crop_dimensions = null)
{
try {
$img = new InterventionImage($this->data);
} catch (\Intervention\Image\Exception\InvalidImageDataStringException $e) {
throw new BadImageException('Bad image data', 0, $e);
} catch (\Intervention\Image\Exception\ImageNotFoundException $e) {
throw new BadImageException('Not an image', 0, $e);
}
if ($dimensions) {
if ($dimensions->getGrab()) {
$img->grab($dimensions->getWidth(), $dimensions->getHeight());
} else {
$img->resize($dimensions->getWidth(), $dimensions->getHeight(), $dimensions->getMaintainRatio(), $dimensions->canUpscale());
}
}
return $img->encode($output_format->key(), $quality);
}
/**
* {@inheritdoc}
*/
public function createVariation(ImageFormat $output_format, $quality, ImageDimensions $dimensions = null, ImageCropDimensions $crop_dimensions = null)
{
$src = $this->getTempFile($this->data);
$img = new \Imagick();
$img->setResolution($this->resolution, $this->resolution);
$img->readImage($src);
$img->setIteratorIndex(0);
// Flatten images here helps the encoder to get rid of the black background
// that appears on encoded image files.
$img = $img->flattenImages();
$img->setImageFormat((string) $output_format->value());
$img->setImageCompressionQuality($quality);
if (null !== $crop_dimensions) {
$img->cropImage($crop_dimensions->getWidth(), $crop_dimensions->getHeight(), $crop_dimensions->getX(), $crop_dimensions->getY());
}
if (null !== $dimensions) {
$img->resizeImage($dimensions->getWidth() ?: 0, $dimensions->getHeight() ?: 0, $this->filter, 1, false);
}
return $img->getImageBlob();
}
/**
* Test to see if we can determine the image format.
*
* @param string $data
*
* @return ImageFormat|null
*/
public function getImageFormat(&$data)
{
if (!$data || strlen($data) < 5) {
return null;
}
// JPEG: FF D8
if (ord($data[0]) == 0xff && ord($data[1]) == 0xd8) {
return ImageFormat::JPEG();
}
// PNG: 89 50 4E 47
if (ord($data[0]) == 0x89 && substr($data, 1, 3) == 'PNG') {
return ImageFormat::PNG();
}
// GIF87a: 47 49 46 38 37 61
// GIF89a: 47 49 46 38 39 61
if (substr($data, 0, 6) == 'GIF87a' || substr($data, 0, 6) == 'GIF89a') {
return ImageFormat::GIF();
}
return null;
}
/**
* @param Image $image
*
* @return ImageMetadata
*/
public function getImageMetadata(Image $image)
{
if (!$image->isHydrated()) {
throw new ImageManagerException(ImageManager::ERR_NOT_HYDRATED);
}
if ($image instanceof ImageVariation) {
throw new ImageManagerException(self::ERR_SOURCE_IMAGE);
}
$metadata = new ImageMetadata();
$data_inspector = new DataInspector();
$data = $image->getData();
if ($data_inspector->isPdf($data)) {
$format = ImageFormat::PDF();
} else {
$format = $data_inspector->getImageFormat($data);
}
$metadata->setMimetype($data_inspector->guessMimeType($data))->setFormat($format)->setResolution($this->getImageResolution($image))->setOrientation($this->getImageOrientation($image))->setDimensions($this->getImageDimensions($image));
return $metadata;
}
/**
* {@inheritdoc}
*/
public static function deserialise($json)
{
if (empty($json)) {
throw new InvalidImageMetadataException();
}
$object_data = json_decode($json, true);
// MIME-type is an minimum requirement for metadata
if (!isset($object_data['mimetype'])) {
throw new InvalidImageMetadataException();
}
$instance = new static();
$instance->setMimeType($object_data['mimetype'])->setFormat(isset($object_data['format']) ? ImageFormat::memberByValue($object_data['format']) : null)->setResolution(isset($object_data['resolution']) ? ImageDimensions::deserialise($object_data['resolution']) : null)->setOrientation(isset($object_data['orientation']) ? ImageOrientation::memberByValue($object_data['orientation']) : null)->setDimensions(isset($object_data['dimensions']) ? ImageDimensions::deserialise($object_data['dimensions']) : null);
return $instance;
}
public function testMetadataRetrieval()
{
$inspector = new ImageInspector();
$fn = __DIR__ . '/../Resources/image.png';
$im = new ImageManager(new Filesystem(new LocalAdapter(static::$tmp_dir . 'remote')), new EphemeralCachePool(), [], true);
$image = $im->loadFromFile($fn, self::TEST_KEY);
$im->push($image);
$metadata = $inspector->getImageMetadata($image);
$this->assertEquals($metadata->getFormat(), ImageFormat::PNG());
$this->assertEquals($metadata->getDimensions(), new ImageDimensions(300, 300));
$this->assertEquals($metadata->getResolution(), new ImageDimensions(72, 72));
$this->assertEquals($metadata->getOrientation(), ImageOrientation::LANDSCAPE());
}
